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US4785745A - Method for waste treatment - Google Patents

Method for waste treatment Download PDF

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Publication number
US4785745A
US4785745A US07/064,307 US6430787A US4785745A US 4785745 A US4785745 A US 4785745A US 6430787 A US6430787 A US 6430787A US 4785745 A US4785745 A US 4785745A
Authority
US
United States
Prior art keywords
waste material
vessel
waste
furnace
conveying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US07/064,307
Other languages
English (en)
Inventor
Jorma Hanni
Mauri T. Rantanen
Matti Vattulainen
Syrjamaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Outokumpu Oyj
EKOKEM Oy AB
Original Assignee
Outokumpu Oyj
EKOKEM Oy AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Outokumpu Oyj, EKOKEM Oy AB filed Critical Outokumpu Oyj
Assigned to OUTOKUMPU OY reassignment OUTOKUMPU OY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SYRJAMAKI, JUHANI, VATTULAINEN, MATTI
Application granted granted Critical
Publication of US4785745A publication Critical patent/US4785745A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/442—Waste feed arrangements
    • F23G5/448—Waste feed arrangements in which the waste is fed in containers or the like

Definitions

  • the present invention relates to a method for treating waste, particularly the so-called hazardous waste. More particularly, the invention relates to the treatment of waste contained in bulk receptacles such as barrels and other such waste containers.
  • the waste contained in barrels is transported in a charging conveyor.
  • the desired amount of waste is measured by employing for example a balance, and the waste is burned in a suitable furnace, for instance a kiln furnace.
  • the procedure may be for example as follows.
  • the barrels containing waste are transported, by means of a conveyor or equivalent, to an opening checkpoint.
  • each vessel is opened, and the contents are examined at least ocularly.
  • Hazardous waste may contain easily evaporated, harmful liquids and/or gases, and therefore the vessels are generally covered by a plastic hood.
  • Before the covering it may be necessary to reduce the waste contained in the barrel roughly by half. This is due to the fact that the amount of waste contained for instance in a 200 liter barrel may create a powerful pressure impulse when entering the furnace. The pressure impulse easily brings about a dangerous gas leak even if there are no mechanical damages.
  • the emptying and burning of waste containers is not always carried out successfully. Every once in a while it may happen that a barrel complete with waste manages to pass through the burning chamber practically unburnt.
  • the capacity of a kiln furnace remains remarkably poor in the above described prior art method.
  • the present invention is characterized by the novel features mainly enlisted in the claim 1.
  • the capacity of a waste disposal plant is multiplied. Irrespective of this, the charging of waste into the kiln furnace can be regulated accurately and steplessly. The danger of possible pressure impulses is essentially reduced, and in practice almost completely eliminated. Thus also harmful gas discharges into the surrounding factory facilities or nature can be more effectively prevented. At the same time, the burning/processing time of the waste is shortened. By aid of the invention, process can be automated in an essentially easier fashion. Consequently, the amount of required personnel is smaller than with the prior art methods. The homogenization of the feed is likewise remarkably easier than in the conventional methods. Respectively, the cutting up of solid waste into smaller particles also means an essential improvement in the processing.
  • the hazardous waste is transported in the barrel 1 by means of the charging conveyor 2.
  • the barrels 1 are then shifted to the balance 3 and further into the kiln furnace 4.
  • the transversal conveyor 5 On the side of this charging path, there is installed the transversal conveyor 5 according to the invention.
  • the transversal conveyor 5 may be for instance an elevator which moves within the gas-sealed liftshaft 7 closed by the closing traps 6.
  • the running path can be chosen either directly into the kiln furnace or via the transversal conveyor 5, the centre of operations being the control unit which is not illustrated in the drawing.
  • the shearing device 9 comprises two parallel shafts operated by intermediation of a gear assembly. On the shafts there are attached single-dented shearing plates which crush and shear the barrels.
  • Fire precautions in the shearing device are carried out so that an inert gas atmosphere is maintained therein.
  • the ignition can be prevented beforehand by employing a slight nitrogen gas feed.
  • the waste from the barrels crushed in the shearing device 9 is conducted into the compensation basin 10.
  • the compensation basin ensures an uninterrupted feed into the furnace.
  • the barrel feed into the shearing device can be adjusted by observing the amount of material contained in the compensation basin.
  • the paste pump 11 is a double-piston pump with a shearing clamping device.
  • the clamping device cuts up metal scrap, even studs.
  • steel scrap can be separated by means of the iron separator 12 and transported, by a specific conveyor 13, into the kiln furnace as well.
  • metal scrap can be shifted directly into a storage bunker to wait for a separate further treatment.
  • fire precautions can also be carried out by applying steam blasting in the shearing device.
  • shearing device instead of the shearing device described above, it is also possible to use an effective press which presses the barrels or other such solid particles into a space as small as possible.
  • the essential point is that the packages, whether barrels or other corresponding items, are transformed into such a form that the waste can be treated by pumping in a paste pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
US07/064,307 1985-10-03 1986-10-03 Method for waste treatment Expired - Lifetime US4785745A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI853834 1985-10-03
FI853834A FI85759C (fi) 1985-10-03 1985-10-03 Avfallshanteringssaett.

Publications (1)

Publication Number Publication Date
US4785745A true US4785745A (en) 1988-11-22

Family

ID=8521452

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/064,307 Expired - Lifetime US4785745A (en) 1985-10-03 1986-10-03 Method for waste treatment

Country Status (8)

Country Link
US (1) US4785745A (fr)
EP (1) EP0238581B1 (fr)
CA (1) CA1277872C (fr)
DE (1) DE3670145D1 (fr)
DK (1) DK162121C (fr)
ES (1) ES2002811A6 (fr)
FI (1) FI85759C (fr)
WO (1) WO1987002119A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4958578A (en) * 1987-01-30 1990-09-25 Phillips Petroleum Company Drummed waste incineration
US4969407A (en) * 1988-11-23 1990-11-13 Cadence Chemical Resources, Inc. Containerized hazardous waste homogenate
US4974529A (en) * 1988-11-23 1990-12-04 Cadence Chemical Resources, Inc. Method for energy recovery from containerized hazardous waste
US5058513A (en) * 1988-11-23 1991-10-22 Benoit Michael R Energy recovery from containerized waste
US5083516A (en) * 1988-11-23 1992-01-28 Cadence Chemical Resources, Inc. Processed wastes as supplemental fuel for modified cement films
US5224433A (en) * 1988-11-23 1993-07-06 Cadence Chemical Resources, Inc. Waste fuel delivery to long kilns
US5410121A (en) * 1994-03-09 1995-04-25 Retech, Inc. System for feeding toxic waste drums into a treatment chamber
US5816795A (en) * 1996-05-24 1998-10-06 Cadence Environmental Energy, Inc. Apparatus and method for providing supplemental fuel to a preheater/precalciner kiln

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4984983A (en) * 1989-02-07 1991-01-15 F. L. Smidth & Co. A/S Method of cofiring hazardous waste in industrial rotary kilns
FR2684169B1 (fr) * 1991-11-27 1994-02-11 Tpte Dispositif de depotage de futs de dechets fluides combustibles, avec ecrasement du fut en vue d'une calcination.
US5269472A (en) * 1992-02-05 1993-12-14 Koenig Larry E Waste processing system
CN114524261B (zh) * 2022-02-15 2024-02-02 湖南旭晟环境科技有限公司 一种危险废物处理用可连续上料的进料装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121524A (en) * 1975-10-31 1978-10-24 Fritz Aurel Goergen Method of and apparatus for treating refuse
US4136624A (en) * 1976-07-12 1979-01-30 Sumitomo Durez Co., Ltd Incinerator for refuse in containers and method of incineration therefor
US4332626A (en) * 1979-09-04 1982-06-01 Ppg Industries, Inc. Method for removing liquid residues from vessels by combustion
US4419943A (en) * 1980-10-29 1983-12-13 Bent Faurholdt Incinerator for chemical waste material stored in barrels

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785304A (en) * 1972-03-13 1974-01-15 K Stookey Method and apparatus for the thermal reduction of rubber or plastic material
CH635919A5 (de) * 1978-10-13 1983-04-29 Von Roll Ag Beschickungsverfahren zur aufgabe von mit abfaellen gefuellten gebinden in einen drehrohrverbrennungsofen und einrichtung zur ausfuehrung des verfahrens.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121524A (en) * 1975-10-31 1978-10-24 Fritz Aurel Goergen Method of and apparatus for treating refuse
US4136624A (en) * 1976-07-12 1979-01-30 Sumitomo Durez Co., Ltd Incinerator for refuse in containers and method of incineration therefor
US4332626A (en) * 1979-09-04 1982-06-01 Ppg Industries, Inc. Method for removing liquid residues from vessels by combustion
US4419943A (en) * 1980-10-29 1983-12-13 Bent Faurholdt Incinerator for chemical waste material stored in barrels

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4958578A (en) * 1987-01-30 1990-09-25 Phillips Petroleum Company Drummed waste incineration
US4969407A (en) * 1988-11-23 1990-11-13 Cadence Chemical Resources, Inc. Containerized hazardous waste homogenate
US4974529A (en) * 1988-11-23 1990-12-04 Cadence Chemical Resources, Inc. Method for energy recovery from containerized hazardous waste
US5058513A (en) * 1988-11-23 1991-10-22 Benoit Michael R Energy recovery from containerized waste
US5083516A (en) * 1988-11-23 1992-01-28 Cadence Chemical Resources, Inc. Processed wastes as supplemental fuel for modified cement films
US5224433A (en) * 1988-11-23 1993-07-06 Cadence Chemical Resources, Inc. Waste fuel delivery to long kilns
US5377603A (en) * 1988-11-23 1995-01-03 Cadence Environmental Energy, Inc. Burning of blended waste-derived supplemental fuel for improved manufacture of cement
US5724899A (en) * 1988-11-23 1998-03-10 Cadence Environmental Energy, Inc. Modified cement kiln for burning combustible solid waste as supplemental fuel
US5410121A (en) * 1994-03-09 1995-04-25 Retech, Inc. System for feeding toxic waste drums into a treatment chamber
WO1995024290A1 (fr) * 1994-03-09 1995-09-14 Retech, Inc. Systeme d'acheminement de futs de dechets toxiques dans une chambre de traitement
US5816795A (en) * 1996-05-24 1998-10-06 Cadence Environmental Energy, Inc. Apparatus and method for providing supplemental fuel to a preheater/precalciner kiln

Also Published As

Publication number Publication date
EP0238581A1 (fr) 1987-09-30
FI85759C (fi) 1992-05-25
FI85759B (fi) 1992-02-14
WO1987002119A1 (fr) 1987-04-09
DK263887A (da) 1987-06-03
DK162121B (da) 1991-09-16
EP0238581B1 (fr) 1990-04-04
ES2002811A6 (es) 1988-10-01
CA1277872C (fr) 1990-12-18
FI853834A0 (fi) 1985-10-03
DK162121C (da) 1992-02-17
FI853834L (fi) 1987-04-04
DK263887D0 (da) 1987-05-22
DE3670145D1 (de) 1990-05-10

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Date Code Title Description
AS Assignment

Owner name: OUTOKUMPU OY, TOOLONKATU 4, HELSINKI, FINLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:VATTULAINEN, MATTI;SYRJAMAKI, JUHANI;REEL/FRAME:004730/0745

Effective date: 19870514

Owner name: OUTOKUMPU OY,FINLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:VATTULAINEN, MATTI;SYRJAMAKI, JUHANI;REEL/FRAME:004730/0745

Effective date: 19870514

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